US11686313B2 - Fluid pumping system - Google Patents

Fluid pumping system Download PDF

Info

Publication number
US11686313B2
US11686313B2 US17/045,864 US201917045864A US11686313B2 US 11686313 B2 US11686313 B2 US 11686313B2 US 201917045864 A US201917045864 A US 201917045864A US 11686313 B2 US11686313 B2 US 11686313B2
Authority
US
United States
Prior art keywords
pulley
pumping system
fluid pumping
pump
driven
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US17/045,864
Other versions
US20210140433A1 (en
Inventor
Christian Humer
Viktor Racz
Michael Wadsack
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hanon Systems EFP Deutschland GmbH
Original Assignee
Hanon Systems EFP Deutschland GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hanon Systems EFP Deutschland GmbH filed Critical Hanon Systems EFP Deutschland GmbH
Publication of US20210140433A1 publication Critical patent/US20210140433A1/en
Application granted granted Critical
Publication of US11686313B2 publication Critical patent/US11686313B2/en
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/028—Units comprising pumps and their driving means the driving means being a planetary gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
    • B60K6/365—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
    • B60K6/383—One-way clutches or freewheel devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/32—Engines with pumps other than of reciprocating-piston type
    • F02B33/34—Engines with pumps other than of reciprocating-piston type with rotary pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/32—Engines with pumps other than of reciprocating-piston type
    • F02B33/34—Engines with pumps other than of reciprocating-piston type with rotary pumps
    • F02B33/40—Engines with pumps other than of reciprocating-piston type with rotary pumps of non-positive-displacement type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
    • F02B39/02—Drives of pumps; Varying pump drive gear ratio
    • F02B39/04—Mechanical drives; Variable-gear-ratio drives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
    • F02B39/02—Drives of pumps; Varying pump drive gear ratio
    • F02B39/08—Non-mechanical drives, e.g. fluid drives having variable gear ratio
    • F02B39/10—Non-mechanical drives, e.g. fluid drives having variable gear ratio electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/05—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/028—Units comprising pumps and their driving means the driving means being a planetary gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
    • F16H47/02—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
    • F16H47/04—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/049—Roller bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/11—Kind or type liquid, i.e. incompressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/40—Transmission of power
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

Definitions

  • the disclosure relates to a fluid pumping system for a vehicle with an internal combustion engine, the fluid pumping system comprising: a housing; an electric motor; a planetary gear with a first member that can be driven by the internal combustion engine, a second member driven by the electric motor, and a third member; and a pump driven by the third element of the planetary gear set, the housing being closed by a pump flange and a pulley with pulley cover.
  • Many motor vehicles are equipped with a pump to transfer fluid under pressure to a number of points in the vehicle.
  • Most of the vehicles currently in production are equipped with one or more pumps that are driven by the vehicle's internal combustion engine.
  • Examples of such pumps include fuel pumps, water pumps, combustion engine oil pumps, transmission oil pumps, superchargers, turbochargers, power steering pumps, air conditioning compressors, and fluid pumps that supply flow to actuation systems for devices such as automatic transmissions, transfer cases, clutches, and many other vehicle pumping requirements.
  • many pumps are configured as fixed displacement pumps to minimise the costs of the arrangement.
  • the fixed displacement pump is typically dimensioned so as to provide a maximum flow rate and maximum pressure based on peak system demand.
  • peak demand is not necessary during a large part of vehicle operation. Therefore, the pump inefficiently delivers a relatively high output when a relatively low output is required.
  • the energy consumed in providing the higher output rather than a lower output may be regarded as wasted energy.
  • some newer vehicle configurations, including hybrid vehicles do not use the internal combustion engine at all times. To achieve maximum fuel economy, the hybrid vehicle's internal combustion engine may be switched off and on many times during vehicle operation.
  • the internal combustion engine may therefore be undesirable for the internal combustion engine to be the fluid pumps' only source of energy.
  • Pumps driven by electric motors can also be used within automotive applications.
  • a pump driven solely by an electric motor typically does not deliver the same operating efficiency as a pump driven mechanically by the internal combustion engine.
  • a pump with a dual energy source to improve the vehicle's energy efficiency and provide pumped fluids during different modes of vehicle operation as and when required.
  • a fluid pumping system for a vehicle with an internal combustion engine which comprises an electric motor and a planetary gear set with a first element that can be driven by the internal combustion engine, a second element driven by the electric motor, and a third element.
  • a pump is driven by the third element of the planetary gear set.
  • the chain wheel that it uses is formed in one piece with the ring gear of the planetary gear.
  • the electric motor drives the planet carrier of the planetary gear via a hollow shaft, the fluid pump shaft being connected to the sun gear.
  • a fluid pumping system for a vehicle with an internal combustion engine comprising: a housing; an electric motor; a planetary gear with a first member that can be driven by the internal combustion engine, a second member driven by the electric motor, and a third member; and a pump driven by the third element of the planetary gear set, the housing being closed by a pump flange and a pulley with pulley cover, wherein at least the pulley and/or a ring gear disposed in the pulley is made of plastic. Cost-effective production is easily possible due to the special shape of the pulley.
  • the pulley is made of sheet metal.
  • a component made of sheet metal can be produced in complex shapes by different manufacturing processes and therefore allows the solution according to the disclosure to be realised in a particularly optimal way.
  • the ring gear is made of plastic and pressed into the pulley. It is advantageous for the ring gear to be connected to the pulley cover in a positionally secure manner via at least one recess and/or a nose.
  • Such a connection allows easy assembly of the pulley cover while ensuring the positioning of the components in relation to each other.
  • a particularly simple solution is one in which the pulley and the ring gear are made in one piece from plastic. It is advantageous for the pulley to form a mounting space for a planetary gear. Due to the simple design of the pulley, it is possible for the pulley to form a contact surface which, together with part of the housing, forms a receptacle for a bearing.
  • the pump can be sealed from the electric motor by radial shaft seals, making end-face mechanical seals unnecessary.
  • the special bearing arrangement also allows the pump's impeller to be supported by a double-row ball bearing, thereby saving installation space.
  • FIG. 1 shows a schematic diagram of the exemplary embodiment
  • FIG. 2 shows an overhead view of the planetary gear
  • FIG. 3 shows a section through a pulley
  • FIG. 4 shows a view of the fluid pumping system.
  • FIG. 1 shows the schematic structure of the fluid pumping system 1 consisting of a pump housing 3 which is closed by a pump flange 4 .
  • the fluid pumping system 1 has three main components.
  • the pump 14 of the fluid pumping system is disposed on the right-hand side along a shaft 2 .
  • an electric motor 20 being a BLDC motor.
  • This has a stator 21 and a rotor 22 designed as a hollow shaft.
  • Inside the stator is a sealing wall 4 a of a pump flange 4 , which seals the electric motor 20 against moisture.
  • a pulley 5 is disposed on the left-hand side in the end area 2 a of the shaft 2 .
  • the pulley 5 is designed to contain a reduction gear in the form of a planetary gear 7 .
  • the pulley 5 is a component that is bent from a piece of sheet metal. It has an outer circumference 5 a , which serves as a friction surface for a belt drive via an internal combustion engine.
  • the pulley 5 furthermore has an inwardly reduced circumference 5 b , wherein an installation space 5 c is formed to accommodate the planetary gear 7 .
  • the pulley With a further circumferential reduction to a circumference 5 d , the pulley forms a contact surface 5 e for a bearing 16 .
  • the pulley has a smooth outer circumference 5 a , but a design with a textured surface for a textured drive belt is also conceivable.
  • a ring gear 10 for the planetary gear 7 is pressed into the installation space 5 c of the pulley 5 .
  • the ring gear 10 is made of a plastic material that is pressed into the pulley.
  • a planetary gear cover 6 also made of sheet metal, serves to cover the planetary gear 7 .
  • the planetary gear cover has one or more recesses 13 which are designed to engage with the nose(s) 15 of the plastic ring gear 10 .
  • the planetary gear 7 further consists of a planet carrier 9 on which the planet 11 is rotatably mounted, and a sun gear 8 .
  • the sun gear 8 is connected to the shaft 2 in a rotationally fixed manner.
  • the pulley together with an axially extending area 3 a of the pump housing 3 , the pulley also forms a mounting space 17 for the bearing 16 , which here is a double ball bearing.
  • This bearing arrangement of the pulley by means of a double-row ball bearing on the housing provides power transmission via the housing structure rather than via the functional drive of the fluid pumping system 1 , i.e. via the planet carriers 9 , the shaft 2 and the bearings of the pump. This reduces the load on the mechanical sealing of the water pump as it improves concentricity, therefore radial shaft seals 19 can be used instead of a conventional mechanical end-face seal.
  • the use of a double-row ball bearing 18 for the impeller bearing of the fluid pump saves axial installation space compared to a bearing assembly consisting of a ball bearing with a needle bearing as used in the past.
  • the shaft 2 is supported by a single bearing point 23 .
  • the pulley 5 is not made from sheet metal, but is injection moulded from plastic together with the ring gear 10 .
  • the fluid pumping system can be operated by means of the coupled mechanical and electrical drive.
  • Mechanical drive is provided by a belt drive and the pulley 5
  • electrical drive is provided by the BLDC motor.
  • the drive function is coupled to the superimposing gear, i.e. the planetary gear 7 , which couples the belt drive and the electric drive directly to one another.

Abstract

Fluid pumping system for a vehicle with an internal combustion engine, the fluid pumping system comprising: a housing; an electric motor; a planetary gear with a first member that can be driven by the internal combustion engine, a second member driven by the electric motor, and a third member; and a pump driven by the third element of the planetary gear set, the housing being closed by a pump flange and a pulley with pulley cover, wherein at least the pulley and/or a ring gear disposed in the pulley is made of plastic.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a U.S. National Phase Application under 35 U.S.C. 371 of International Application No. PCT/EP2019/055552, filed Mar. 6, 2019, which claims the benefit of German Patent Application No. 10 2018 207 001.6, filed May 7, 2018. The entire disclosures of each of the above applications are incorporated herein by reference.
FIELD
The disclosure relates to a fluid pumping system for a vehicle with an internal combustion engine, the fluid pumping system comprising: a housing; an electric motor; a planetary gear with a first member that can be driven by the internal combustion engine, a second member driven by the electric motor, and a third member; and a pump driven by the third element of the planetary gear set, the housing being closed by a pump flange and a pulley with pulley cover.
BACKGROUND
This section provides background information related to the present disclosure which is not necessarily prior art.
Many motor vehicles are equipped with a pump to transfer fluid under pressure to a number of points in the vehicle. Most of the vehicles currently in production are equipped with one or more pumps that are driven by the vehicle's internal combustion engine. Examples of such pumps include fuel pumps, water pumps, combustion engine oil pumps, transmission oil pumps, superchargers, turbochargers, power steering pumps, air conditioning compressors, and fluid pumps that supply flow to actuation systems for devices such as automatic transmissions, transfer cases, clutches, and many other vehicle pumping requirements.
For example, many pumps are configured as fixed displacement pumps to minimise the costs of the arrangement. The fixed displacement pump is typically dimensioned so as to provide a maximum flow rate and maximum pressure based on peak system demand. However, peak demand is not necessary during a large part of vehicle operation. Therefore, the pump inefficiently delivers a relatively high output when a relatively low output is required. The energy consumed in providing the higher output rather than a lower output may be regarded as wasted energy. Furthermore, some newer vehicle configurations, including hybrid vehicles, do not use the internal combustion engine at all times. To achieve maximum fuel economy, the hybrid vehicle's internal combustion engine may be switched off and on many times during vehicle operation.
It may therefore be undesirable for the internal combustion engine to be the fluid pumps' only source of energy. Pumps driven by electric motors can also be used within automotive applications. However, a pump driven solely by an electric motor typically does not deliver the same operating efficiency as a pump driven mechanically by the internal combustion engine. Hence, there may be a technological need for a pump with a dual energy source to improve the vehicle's energy efficiency and provide pumped fluids during different modes of vehicle operation as and when required.
From U.S. Pat. No. 8,714,942 B2, a fluid pumping system for a vehicle with an internal combustion engine is known, which comprises an electric motor and a planetary gear set with a first element that can be driven by the internal combustion engine, a second element driven by the electric motor, and a third element. A pump is driven by the third element of the planetary gear set. The chain wheel that it uses is formed in one piece with the ring gear of the planetary gear. The electric motor drives the planet carrier of the planetary gear via a hollow shaft, the fluid pump shaft being connected to the sun gear.
SUMMARY
This section provides a general summary of the disclosure, and is not a comprehensive disclosure of its full scope or all of its features.
It is the object of the disclosure to provide a fluid pumping system of cost-effective design.
The object is solved with a fluid pumping system for a vehicle with an internal combustion engine, the fluid pumping system comprising: a housing; an electric motor; a planetary gear with a first member that can be driven by the internal combustion engine, a second member driven by the electric motor, and a third member; and a pump driven by the third element of the planetary gear set, the housing being closed by a pump flange and a pulley with pulley cover, wherein at least the pulley and/or a ring gear disposed in the pulley is made of plastic. Cost-effective production is easily possible due to the special shape of the pulley.
It is particularly advantageous if the pulley is made of sheet metal. A component made of sheet metal can be produced in complex shapes by different manufacturing processes and therefore allows the solution according to the disclosure to be realised in a particularly optimal way.
Using sheet metal to produce the pulley results in an advantageous solution if the ring gear is made of plastic and pressed into the pulley. It is advantageous for the ring gear to be connected to the pulley cover in a positionally secure manner via at least one recess and/or a nose.
Such a connection allows easy assembly of the pulley cover while ensuring the positioning of the components in relation to each other.
A particularly simple solution is one in which the pulley and the ring gear are made in one piece from plastic. It is advantageous for the pulley to form a mounting space for a planetary gear. Due to the simple design of the pulley, it is possible for the pulley to form a contact surface which, together with part of the housing, forms a receptacle for a bearing.
Due to this special bearing arrangement, forces are transmitted directly to the housing and kept away from the shaft.
Due to the special bearing arrangement of the pulley, the pump can be sealed from the electric motor by radial shaft seals, making end-face mechanical seals unnecessary.
The special bearing arrangement also allows the pump's impeller to be supported by a double-row ball bearing, thereby saving installation space.
DRAWINGS
The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure. The disclosure is described below by way of example, with reference to the attached drawings.
FIG. 1 shows a schematic diagram of the exemplary embodiment,
FIG. 2 shows an overhead view of the planetary gear,
FIG. 3 shows a section through a pulley,
FIG. 4 shows a view of the fluid pumping system.
Corresponding reference numerals indicate corresponding parts throughout the several views of the drawings.
DETAILED DESCRIPTION
Example embodiments will now be described more fully with reference to the accompanying drawings.
FIG. 1 shows the schematic structure of the fluid pumping system 1 consisting of a pump housing 3 which is closed by a pump flange 4. The fluid pumping system 1 has three main components. The pump 14 of the fluid pumping system is disposed on the right-hand side along a shaft 2. In the centre is an electric motor 20, being a BLDC motor. This has a stator 21 and a rotor 22 designed as a hollow shaft. Inside the stator is a sealing wall 4 a of a pump flange 4, which seals the electric motor 20 against moisture. A pulley 5 is disposed on the left-hand side in the end area 2 a of the shaft 2. The pulley 5 is designed to contain a reduction gear in the form of a planetary gear 7. The pulley 5 is a component that is bent from a piece of sheet metal. It has an outer circumference 5 a, which serves as a friction surface for a belt drive via an internal combustion engine. The pulley 5 furthermore has an inwardly reduced circumference 5 b, wherein an installation space 5 c is formed to accommodate the planetary gear 7. With a further circumferential reduction to a circumference 5 d, the pulley forms a contact surface 5 e for a bearing 16. In this embodiment, the pulley has a smooth outer circumference 5 a, but a design with a textured surface for a textured drive belt is also conceivable. A ring gear 10 for the planetary gear 7 is pressed into the installation space 5 c of the pulley 5.
The ring gear 10 is made of a plastic material that is pressed into the pulley. A planetary gear cover 6, also made of sheet metal, serves to cover the planetary gear 7. The planetary gear cover has one or more recesses 13 which are designed to engage with the nose(s) 15 of the plastic ring gear 10.
When the fluid pump is driven by the internal combustion engine via the pulley 5, the pulley 5 rotates with the pressed-in ring gear 10 and the planetary gear cover 6. The planetary gear 7 further consists of a planet carrier 9 on which the planet 11 is rotatably mounted, and a sun gear 8. The sun gear 8 is connected to the shaft 2 in a rotationally fixed manner.
Together with an axially extending area 3 a of the pump housing 3, the pulley also forms a mounting space 17 for the bearing 16, which here is a double ball bearing. This bearing arrangement of the pulley by means of a double-row ball bearing on the housing provides power transmission via the housing structure rather than via the functional drive of the fluid pumping system 1, i.e. via the planet carriers 9, the shaft 2 and the bearings of the pump. This reduces the load on the mechanical sealing of the water pump as it improves concentricity, therefore radial shaft seals 19 can be used instead of a conventional mechanical end-face seal. The use of a double-row ball bearing 18 for the impeller bearing of the fluid pump saves axial installation space compared to a bearing assembly consisting of a ball bearing with a needle bearing as used in the past. The shaft 2 is supported by a single bearing point 23.
In an alternative embodiment, the pulley 5 is not made from sheet metal, but is injection moulded from plastic together with the ring gear 10.
The fluid pumping system can be operated by means of the coupled mechanical and electrical drive. Mechanical drive is provided by a belt drive and the pulley 5, while electrical drive is provided by the BLDC motor. The drive function is coupled to the superimposing gear, i.e. the planetary gear 7, which couples the belt drive and the electric drive directly to one another.
The foregoing description of the embodiments has been provided for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure. Individual elements or features of a particular embodiment are generally not limited to that particular embodiment, but, where applicable, are inter-changeable and can be used in a selected embodiment, even if not specifically shown or described. The same may also be varied in many ways. Such variations are to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of the disclosure.

Claims (11)

The inventon claimed is:
1. A fluid pumping system for a vehicle with an internal combustion engine, the fluid pumping system comprising: a housing; an electric motor; a planetary gear set with a first member that can be driven by the internal combustion engine, a second member driven by the electric motor, and a third member; and a pump driven by the third element of the planetary gear set, the housing being closed by a pump flange and a pulley with pulley cover, wherein the pulley forms a contact surface which, together with an axially extending area of the housing, forms a receptacle for a bearing.
2. The fluid pumping system according to claim 1, wherein the pulley is made of sheet metal.
3. The fluid pumping system according to claim 1, wherein the ring gear is made of plastic and can be pressed into the pulley.
4. The fluid pumping system according to claim 1, wherein the pulley and the ring gear are made in one piece from plastic.
5. The fluid pumping system according to claim 1, wherein the pulley forms a mounting space for a planetary gear.
6. The fluid pumping system according to claim 1, wherein the pump is sealed from the electric motor by means of radial shaft seals.
7. The fluid pumping system according to claim 1, wherein an impeller of the pump is supported by a double-row ball bearing.
8. The fluid pumping system according to claim 1, wherein a shaft is supported by a single bearing point.
9. The fluid pumping system according to claim 1, wherein the pulley and/or a ring gear disposed in the pulley is made of plastic.
10. A fluid pumping system for a vehicle with an internal combustion engine, the fluid pumping system comprising: a housing; an electric motor; a planetary gear set with a first member that can be driven by the internal combustion engine, a second member driven by the electric motor, and a third member; and a pump driven by the third element of the planetary gear set, the housing being closed by a pump flange and a pulley with pulley cover, wherein the ring gear is connected to the pulley cover in a positionally secure manner via at least one recess and/or a nose.
11. The fluid pumping system according to claim 10, wherein the pulley and/or a ring gear disposed in the pulley is made of plastic.
US17/045,864 2018-05-07 2019-03-06 Fluid pumping system Active 2040-04-01 US11686313B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102018207001.6A DE102018207001B4 (en) 2018-05-07 2018-05-07 Fluid pumping system
DE102018207001.6 2018-05-07
PCT/EP2019/055552 WO2019214864A1 (en) 2018-05-07 2019-03-06 Fluid pumping system

Publications (2)

Publication Number Publication Date
US20210140433A1 US20210140433A1 (en) 2021-05-13
US11686313B2 true US11686313B2 (en) 2023-06-27

Family

ID=65724386

Family Applications (1)

Application Number Title Priority Date Filing Date
US17/045,864 Active 2040-04-01 US11686313B2 (en) 2018-05-07 2019-03-06 Fluid pumping system

Country Status (6)

Country Link
US (1) US11686313B2 (en)
JP (1) JP7028992B2 (en)
KR (1) KR102419493B1 (en)
CN (1) CN112105817B (en)
DE (1) DE102018207001B4 (en)
WO (1) WO2019214864A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3665373B1 (en) * 2017-08-07 2023-08-09 Hanon Systems EFP Canada Ltd. Hybrid coolant pump
DE102019203239A1 (en) * 2019-03-11 2020-09-17 Zf Friedrichshafen Ag Method for supplying consumers of an oil supply system for a vehicle transmission with oil

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2908189A (en) * 1957-06-12 1959-10-13 Garrett Corp Combination engine starter and constant speed drive
US5423304A (en) * 1994-10-31 1995-06-13 Chrysler Corporation Mechanically driven centrifugal air compressor with integral plastic pulley and internal helical ring gear
DE19941705A1 (en) 1998-09-09 2000-03-16 Luk Lamellen & Kupplungsbau Drive chain for an automobile, comprises an electric motor that can be used as a drive motor or generator
DE10125705A1 (en) 2001-05-25 2002-11-28 Ina Schaeffler Kg Auxiliary generating set e.g. for combustion engine, has annulus arranged coaxially to belt pulley and freewheel between sun wheel and drive shaft
DE10125692A1 (en) 2001-05-25 2002-11-28 Ina Schaeffler Kg Auxiliary device, especially generator for internal combustion engine, has freewheel acting between planetary bearer and part fixed to chassis to decouple pulley decelerations from drive shaft
DE10214637A1 (en) 2002-04-02 2003-10-23 Woco Franz Josef Wolf & Co Gmbh Hybrid drive for hybrid pump, especially for motor vehicle, has planetary drive that can be driven by electric motor and/or mechanical drive
WO2006089376A1 (en) 2005-02-28 2006-08-31 Nt Consulting International Pty Limited Drive system with fluid pump
CN1836107A (en) 2003-09-09 2006-09-20 西门子公司 Inner gear-wheel pump comprising reinforced channels
EP1801386A1 (en) 2005-12-20 2007-06-27 Ford Global Technologies, LLC An arrangement at an internal combustion engine
CN101392741A (en) 2007-09-17 2009-03-25 陈吉明 Plastic pump for high pressure cleaning machine
CN102459844A (en) 2009-06-09 2012-05-16 麦格纳动力系有限公司 Dual power input fluid pump
DE102013211813A1 (en) 2013-06-21 2014-07-31 Schaeffler Technologies Gmbh & Co. Kg Booster i.e. refrigeration compressor, for auxiliary unit of combustion engine of motor car, has planetary gear mechanism provided within pulley, and shaft connected to electromotor over another shaft with auxiliary unit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017053454A (en) 2015-09-10 2017-03-16 Ntn株式会社 Variable Speed Pulley Mechanism

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2908189A (en) * 1957-06-12 1959-10-13 Garrett Corp Combination engine starter and constant speed drive
US5423304A (en) * 1994-10-31 1995-06-13 Chrysler Corporation Mechanically driven centrifugal air compressor with integral plastic pulley and internal helical ring gear
DE19941705A1 (en) 1998-09-09 2000-03-16 Luk Lamellen & Kupplungsbau Drive chain for an automobile, comprises an electric motor that can be used as a drive motor or generator
DE10125705A1 (en) 2001-05-25 2002-11-28 Ina Schaeffler Kg Auxiliary generating set e.g. for combustion engine, has annulus arranged coaxially to belt pulley and freewheel between sun wheel and drive shaft
DE10125692A1 (en) 2001-05-25 2002-11-28 Ina Schaeffler Kg Auxiliary device, especially generator for internal combustion engine, has freewheel acting between planetary bearer and part fixed to chassis to decouple pulley decelerations from drive shaft
DE10214637A1 (en) 2002-04-02 2003-10-23 Woco Franz Josef Wolf & Co Gmbh Hybrid drive for hybrid pump, especially for motor vehicle, has planetary drive that can be driven by electric motor and/or mechanical drive
CN1836107A (en) 2003-09-09 2006-09-20 西门子公司 Inner gear-wheel pump comprising reinforced channels
WO2006089376A1 (en) 2005-02-28 2006-08-31 Nt Consulting International Pty Limited Drive system with fluid pump
EP1801386A1 (en) 2005-12-20 2007-06-27 Ford Global Technologies, LLC An arrangement at an internal combustion engine
CN101392741A (en) 2007-09-17 2009-03-25 陈吉明 Plastic pump for high pressure cleaning machine
CN102459844A (en) 2009-06-09 2012-05-16 麦格纳动力系有限公司 Dual power input fluid pump
US20120269653A1 (en) 2009-06-09 2012-10-25 Jaroslaw Lutoslawski Dual power input fluid pump
US8714942B2 (en) * 2009-06-09 2014-05-06 Magna Powertrain Inc. Dual power input fluid pump
DE102013211813A1 (en) 2013-06-21 2014-07-31 Schaeffler Technologies Gmbh & Co. Kg Booster i.e. refrigeration compressor, for auxiliary unit of combustion engine of motor car, has planetary gear mechanism provided within pulley, and shaft connected to electromotor over another shaft with auxiliary unit

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Office Action regarding Chinese Patent Application No. 20198003119.5, dated Nov. 30, 2021.
Office Action regarding German Patent Application No. 102018207001.6, dated Nov. 9, 2020.
Office Action regarding Korean Patent Application No. 20207029581, dated Dec. 27, 2021.

Also Published As

Publication number Publication date
CN112105817A (en) 2020-12-18
JP7028992B2 (en) 2022-03-02
DE102018207001B4 (en) 2021-07-01
US20210140433A1 (en) 2021-05-13
WO2019214864A1 (en) 2019-11-14
CN112105817B (en) 2023-01-17
DE102018207001A1 (en) 2019-11-07
KR102419493B1 (en) 2022-07-11
JP2021519886A (en) 2021-08-12
KR20200133254A (en) 2020-11-26

Similar Documents

Publication Publication Date Title
US10337513B2 (en) Electric-motor-driven liquid pump
EP2440762B2 (en) Dual power input fluid pump
US8876644B2 (en) Pump unit with a pump and a hybrid drive
US6612815B2 (en) Electrically powered coolant pump
US10767523B2 (en) Auxiliary drive system for a pump
US6758656B2 (en) Multi-stage internal gear/turbine fuel pump
US11686313B2 (en) Fluid pumping system
US8585384B2 (en) Rotary pump including inner rotor and outer rotor having different axial size of an axial clearance
CN108138612B (en) Conveying device for a motor vehicle
US9127674B2 (en) High efficiency fixed displacement vane pump including a compression spring
JP2023509207A (en) Side channel compressor for fuel cell systems for conveying and/or compressing gaseous media, in particular hydrogen
CN109113953A (en) Electric oil pump assembly, steering system and lubricating system
GB2404220A (en) variable speed mechanically-driven vehicular water pump with supplementary electrical drive
CN101356375B (en) Fluid pump
CN207673423U (en) With Mechanical Driven and motor-driven engine water pump
CN216489931U (en) Brushless DC motor driven electronic duplex pump for speed changer
CN215719768U (en) Automobile electronic water pump
CN109113957A (en) Electric oil pump assembly, steering system and lubricating system
CN109113952A (en) Electric oil pump assembly, steering system and lubricating system
CN109098831A (en) With Mechanical Driven and motor-driven engine water pump
WO2023170603A1 (en) Operating assembly for pumps for recirculating a cooling fluid of combustion engines and recirculating pump provided with such an operating assembly
CN109113947A (en) Electric oil pump assembly, steering system and lubricating system
CN109113988A (en) Electric oil pump assembly, steering system and lubricating system

Legal Events

Date Code Title Description
FEPP Fee payment procedure

Free format text: ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: BIG.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

STPP Information on status: patent application and granting procedure in general

Free format text: APPLICATION DISPATCHED FROM PREEXAM, NOT YET DOCKETED

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STCF Information on status: patent grant

Free format text: PATENTED CASE